Spondylolysis, thoracic region

This code signifies a defect or stress fracture in the pars interarticularis of a thoracic vertebra. It represents a structural discontinuity in the vertebral arch, which can lead to instability and pain in the mid-back region.

Apply this code when documentation explicitly states spondylolysis affecting the thoracic spine. This diagnosis is typically supported by imaging studies such as X-rays, CT scans, or MRIs demonstrating the pars defect in the thoracic vertebrae.

• Ensure the documentation specifies "thoracic region" to differentiate from other spinal segments.
• Do not confuse with spondylolisthesis (vertebral slippage), which is a separate condition.
• Look for laterality if specified, though spondylolysis is often bilateral or unspecified in laterality.